Re: [libvirt] [PATCH] virsh: change wexitstatus order to allow compilation on mac osx

[Eric Blake]

On 09/15/2010 02:17 PM, Justin Clift wrote:
> On 09/16/2010 05:49 AM, Eric Blake wrote:
> <snip>
> > +MacOS 10.5.
>
> Is "10.5" the right choice for this?
>
> Wondering if maybe it should be a range indicator, as "10.6"(.4)" here
> has this issue, and it sounds like pretty much all of the previous
> versions will too.

Our general policy with 
gnulib/doc/{glibc,posix}-{headers,functions}/*.texi has been to document 
the most recent version that has been explicitly tested to have the 
issue.  It's couched in open-ended terms (the failure exists on at least 
this modern porting target) rather than closed-ended (only these targets 
have the issues), and it is generally a safe bet that older versions 
likely have the same bugs.  Whether newer versions have fixed the bug is 
irrelevant in portability matters - really, once you fix an issue for 
any one sane porting target, you've avoided the problem for all other 
porting targets even if you have not yet verified whether those other 
porting targets share the same issue.

So I think the wording is okay as-is.  But thanks for the scrutiny :)

Meanwhile, over time, some porting targets are no longer sane (for 
example, this month there has been a question of whether IRIX 5.3 
support still makes sense, now that IRIX 6.5 is top-of-the-line and the 
vendor no longer maintains patches for the older version).  Eventually, 
when targets are retired, we could sweep back through the collected 
wisdom of portability notes and cull out old platforms; at that point 
we'd have to check if the problem still exists on current platforms 
before pruning corresponding code from the original workaround.

--
Eric Blake   address@hidden    +1-801-349-2682
Libvirt virtualization library http://libvirt.org